TreeItemImpl (Nuxeo ECM Projects 8.2 API)

java.lang.Object
- org.nuxeo.ecm.webengine.ui.tree.TreeItemImpl

All Implemented Interfaces:

Serializable, TreeItem
```
public class TreeItemImpl
extends Object
implements TreeItem
```
Author:

Bogdan Stefanescu

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`protected TreeItem[]`	`children`
`static TreeItem[]`	`EMPTY_CHILDREN`
`static int`	`F_CONTAINER`
`static int`	`F_EXPANDED`
`protected String[]`	`facets`
`static TreeItem[]`	`HAS_CHILDREN`
`protected String`	`label`
`protected Object`	`obj`
`protected TreeItem`	`parent`
`protected Path`	`path`
`protected ContentProvider`	`provider`
`protected int`	`state`

Fields inherited from interface org.nuxeo.ecm.webengine.ui.tree.TreeItem
BOTH, CHILDREN, DATA, NONE

Constructor Summary

Constructors
Constructor and Description
`TreeItemImpl(ContentProvider provider, Object data)`
`TreeItemImpl(TreeItem parent, ContentProvider provider, Object data)`
`TreeItemImpl(TreeItem parent, Object data)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`protected TreeItem`	`_getChild(String name)`
`Object`	`accept(TreeItemVisitor visitor)` Accepts a visitor.
`void`	`collapse()` Collapses this item.
`boolean`	`equals(Object obj)`
`TreeItem[]`	`expand()` Expands the item.
`TreeItem`	`find(Path path)` Finds the item given its relative path to that item.
`TreeItem`	`findAndReveal(Path path)` Finds the item given its relative path to that item and expand all its parents so that the item will be visible in the tree.
`TreeItem`	`getChild(String name)` Gets the child item given its name.
`TreeItem[]`	`getChildren()` Gets the cached children.
`ContentProvider`	`getContentProvider()` Gets the current content provider.
`String[]`	`getFacets()`
`String`	`getLabel()` Gets the label to be displayed for this item.
`String`	`getName()` Gets this node name.
`Object`	`getObject()` Gets the object attached to this item.
`TreeItem`	`getParent()` Gets the parent item or null if this is the root item.
`Path`	`getPath()` Gets the item path.
`int`	`getValidationState()` Returns the validation state.
`boolean`	`hasChildren()` Tests whether this item has any children.
`void`	`invalidate(int type)` Invalidates the item.
`boolean`	`isContainer()` Tests whether or not the item may have children.
`boolean`	`isExpanded()` Tests whether or not the item is expanded.
`protected void`	`loadChildren()`
`protected void`	`loadData()`
`void`	`refresh(int type)` Reloads item information like label, properties and children depending on the specified refresh type.
`String`	`toString()`
`void`	`validate()` Validates the item.
`void`	`validateChildren()`
`void`	`validateData()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - F_CONTAINER
```
public static final int F_CONTAINER
```
    See Also:
    
    Constant Field Values
  - F_EXPANDED
```
public static final int F_EXPANDED
```
    See Also:
    
    Constant Field Values
  - EMPTY_CHILDREN
```
public static final TreeItem[] EMPTY_CHILDREN
```
  - HAS_CHILDREN
```
public static final TreeItem[] HAS_CHILDREN
```
  - provider
```
protected final ContentProvider provider
```
  - parent
```
protected final TreeItem parent
```
  - path
```
protected final Path path
```
  - label
```
protected String label
```
  - facets
```
protected String[] facets
```
  - children
```
protected TreeItem[] children
```
  - obj
```
protected final Object obj
```
  - state
```
protected volatile int state
```
- Constructor Detail
  - TreeItemImpl
```
public TreeItemImpl(TreeItem parent,
                    ContentProvider provider,
                    Object data)
```
  - TreeItemImpl
```
public TreeItemImpl(ContentProvider provider,
                    Object data)
```
  - TreeItemImpl
```
public TreeItemImpl(TreeItem parent,
                    Object data)
```
- Method Detail
  - hasChildren
```
public boolean hasChildren()
```
    Description copied from interface: TreeItem
    
    Tests whether this item has any children.
    This method will not load children if not already loaded.
    
    Specified by:
    
    hasChildren in interface TreeItem
    
    Returns:
    
    true if the children item has children, false otherwise
  - getChildren
```
public TreeItem[] getChildren()
```
    Description copied from interface: TreeItem
    
    Gets the cached children.
    The children items are created using the content provider the first time you call TreeItem.expand()
    
    Specified by:
    
    getChildren in interface TreeItem
  - getObject
```
public Object getObject()
```
    Description copied from interface: TreeItem
    
    Gets the object attached to this item.
    The nature of the object depends on the registered content provider which will populate the tree branches when ContentProvider.getChildren(Object) is called. The root item is specified by using TreeModel.setInput(Object)
    
    Specified by:
    
    getObject in interface TreeItem
    
    Returns:
    
    the attached object or null if none
  - getPath
```
public Path getPath()
```
    Description copied from interface: TreeItem
    
    Gets the item path.
    The path is uniquely identifying the item in its tree and is consistent with the tree structure so the parent item will have the same path as the child minus the last segment. The root item path will always be "/". (The root item should not be displayed in the tree - it has no label or other properties.)
    Paths are useful to locate items in the tree using find methods.
    Specified by: getPath in interface TreeItem Returns: the item path See Also: TreeItem.find(Path), TreeItem.findAndReveal(Path), TreeModel.find(Path), TreeModel.findAndReveal(Path)
  getParent public TreeItem getParent() Description copied from interface: TreeItem Gets the parent item or null if this is the root item. Specified by: getParent in interface TreeItem Returns: the parent item getContentProvider public ContentProvider getContentProvider() Description copied from interface: TreeItem Gets the current content provider. Specified by: getContentProvider in interface TreeItem Returns: the content provider. never return null getName public String getName() Description copied from interface: TreeItem Gets this node name. This is the same as the last segment on the item path Specified by: getName in interface TreeItem getLabel public String getLabel() Description copied from interface: TreeItem Gets the label to be displayed for this item. Specified by: getLabel in interface TreeItem getFacets public String[] getFacets() isContainer public boolean isContainer() Description copied from interface: TreeItem Tests whether or not the item may have children. Specified by: isContainer in interface TreeItem Returns: true if a container, false otherwise find public TreeItem find(Path path) Description copied from interface: TreeItem Finds the item given its relative path to that item. This method will search only the loaded items - it will not make additional calls to provider to get new items. Specified by: find in interface TreeItem Parameters: path - the item path to find Returns: the item or null if none. findAndReveal public TreeItem findAndReveal(Path path) Description copied from interface: TreeItem Finds the item given its relative path to that item and expand all its parents so that the item will be visible in the tree. The item itself will not be expanded. Use TreeItem.expand() on the returned item if you want so. This method is loading any parent if not already loaded by using the registered provider. Specified by: findAndReveal in interface TreeItem Parameters: path - the item path to find Returns: the item or null if none getChild public TreeItem getChild(String name) Description copied from interface: TreeItem Gets the child item given its name. This method will force loading children using the provider if not already loaded or if invalidated. Specified by: getChild in interface TreeItem Parameters: name - the name of the child item Returns: the child item or null if none _getChild protected TreeItem _getChild(String name) expand public TreeItem[] expand() Description copied from interface: TreeItem Expands the item. This will load children items from the provider if they are not already loaded or if invalidated. Specified by: expand in interface TreeItem loadData protected void loadData() validateData public void validateData() validateChildren public void validateChildren() loadChildren protected void loadChildren() collapse public void collapse() Description copied from interface: TreeItem Collapses this item. This will hide any loaded children. Specified by: collapse in interface TreeItem isExpanded public boolean isExpanded() Description copied from interface: TreeItem Tests whether or not the item is expanded. Specified by: isExpanded in interface TreeItem Returns: true of expanded, false otherwise refresh public void refresh(int type) Description copied from interface: TreeItem Reloads item information like label, properties and children depending on the specified refresh type. The argument is used to specify the type of refresh and can have one of the following values: TreeItem.DATA - to refresh only item data like labels TreeItem.CHILDREN - to refresh only item children TreeItem.BOTH - to refresh both data and children Specified by: refresh in interface TreeItem Parameters: type - of refresh validate public void validate() Description copied from interface: TreeItem Validates the item. If the item was not invalidated do nothing. Specified by: validate in interface TreeItem invalidate public void invalidate(int type) Description copied from interface: TreeItem Invalidates the item. This will force reloading item data and/or children next time item and/or children are accessed. The argument is used to specify the type of invalidation and can have one of the following values: TreeItem.DATA - to invalidate only item data like labels TreeItem.CHILDREN - to invalidate only item children TreeItem.BOTH - to invalidate both data and children Specified by: invalidate in interface TreeItem Parameters: type - of invalidation getValidationState public int getValidationState() Description copied from interface: TreeItem Returns the validation state. Can be one of: TreeItem.DATA - the item data is invalid (not loaded or invalidated) TreeItem.CHILDREN - the item children are invalid TreeItem.BOTH - both data and children are invalid Specified by: getValidationState in interface TreeItem Returns: the validation state. accept public Object accept(TreeItemVisitor visitor) Description copied from interface: TreeItem Accepts a visitor. This is to support visitor pattern. Specified by: accept in interface TreeItem Parameters: visitor - the visitor to accept Returns: the result of the visit toString public String toString() Overrides: toString in class Object equals public boolean equals(Object obj) Overrides: equals in class Object

Class TreeItemImpl

Field Summary

Fields inherited from interface org.nuxeo.ecm.webengine.ui.tree.TreeItem

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

F_CONTAINER

F_EXPANDED

EMPTY_CHILDREN

HAS_CHILDREN

provider

parent

path

label

facets

children

obj

state

Constructor Detail

TreeItemImpl

TreeItemImpl

TreeItemImpl

Method Detail

hasChildren

getChildren

getObject

getPath

getParent

getContentProvider

getName

getLabel

getFacets

isContainer

find

findAndReveal

getChild

_getChild

expand

loadData

validateData

validateChildren

loadChildren

collapse

isExpanded

refresh

validate

invalidate

getValidationState

accept

toString

equals